Suffer social anxiety and have no self confidence, what can i do to feel better?

I can't really operate in a social situation unless I've had a few drinks, and even then I can't talk to girls ona more than friend level because I know I am ugly. I have a very hairy back and chest, short (5"6), overweight, freckles all over my body, reddish hair, dry peeling skin on my face, and a bad scar across my nose from being bashed last year. And im not very well endowed to offer anything satisfying to females. I have had girls stand me up for dates or make other plans at the last second, and it does seem I'm destined to be alone. I've had twice butboth times the girl wanted to leave immediately and regretted what they did because of alcohol. Am I depressed or do i need to toughen up because not everyone deserves someone? I am 21 and never had a gf, and whether it is desperation or my looks or my attitude, no girls really seem interested in me more than friends. What can i do? Any help appreciated.